hexasodium 2,2'-[vinylenebis[(3-sulphonato-4,1-phenylene)imino[6-[[3-(acetylamino)propyl]amino]-1,3,5-triazine-4,2-diyl]imino]]bis(benzene-1,4-disulphonate)

2,2'-[1,2-Ethenediylbis[(3-sodiooxysulfonyl-4,1-phenylene)imino[6-[[3-(acetylamino)propyl]amino]-1,3,5-triazine-4,2-diyl]imino]]bis(1,4-benzenedisulfonic acid disodium) salt